<template>
    <div class="star" :class="starType">
        <span v-for="itemClass of itemClasses" class="star-item" :class="itemClass" :key="itemClass.id"></span>
    </div>
</template>

<script>
const LENGTH = 5;
const CLS_ON = "on";
const CLS_HALF = "half";
const CLS_OFF = "off";
export default {
  name: "star",
  data() {
    return {};
  },
  props: {
    size: {
      type: Number
    },
    score: {
      type: Number
    }
  },
  computed: {
    starType() {
      return "star-" + this.size;
    },
    itemClasses() {
      let result = [];
      let score = Math.floor(this.score * 2) / 2;
      let hasDecimal = score % 1 !== 0;
      console.log(hasDecimal);
      let integer = Math.floor(score);
      console.log(integer);
      for (let i = 0; i < integer; i++) {
        result.push(CLS_ON);
      }
      if (hasDecimal) {
        result.push(CLS_HALF);
      }
      while (result.length < LENGTH) {
        result.push(CLS_OFF);
      }
      return result;
    }
  }
};
</script>

<style lang="stylus">
@import "../assets/css/mixin.styl"
.star
    font-size 0
    .star-item
       display inline-block
    &.star-48
       .star-item
           width 20px
           height 20px
           margin-right 22px
           background-size 20px 20px
           &:last-child
               margin-right 0
           &.on
               bg-imge('../assets/img/star48_on')
           &.half
               bg-imge('../assets/img/star48_half')
           &.off
               bg-imge('../assets/img/star48_off')
    &.star-36
        .star-item
            width 15px
            height 15px
            margin-right 16px
            background-size 15px 15px
            &:last-child
                margin-right 0
            &.on
                bg-imge('../assets/img/star36_on')
            &.half
                bg-imge('../assets/img/star36_half')
            &.off
                bg-imge('../assets/img/star36_off')
    &.star-24
        .star-item
            width 10px
            height 10px
            margin-right 3px
            background-size 10px 10px
            &:last-child
                margin-right 0
            &.on
                bg-imge('../assets/img/star24_on')
            &.half
                bg-imge('../assets/img/star24_half')
            &.off
                bg-imge('../assets/img/star24_off')
</style>
